2 Answers

First off, be sure that it IS the SPS (Steering Position Sensor) throwing the code and not a bad wheel speed sensor or ABS module (waaay more common
on these). Next, take it to the dealer because this can't safely or properly done by yourself if you've never disarmed an airbag, its not something to try
without help from someone who's done it. I know, I know, I hate it as much as you do, but the sensor also needs GM software to relearn its position on
the shaft or the Stabilitrak can get confused not knowing where its position is which can cause an accident.

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